The Effect of Transcutaneous Electrical Acupoint Stimulation Combined With Transcutaneous Auricular Vagus Nerve Stimulation on Postoperative Delirium in Elderly Patients Undergoing Gastrointestinal Surgery

The aim of this clinical trial is to study the effect of transcutaneous electrical acupoint stimulation combined with auricular vagus nerve stimulation on postoperative delirium in elderly patients undergoing gastrointestinal surgery. The study aims to answer the following main questions 1. whether it reduces the expression of inflammatory factors in the acute postoperative period 2. whether it can reduce the incidence of postoperative delirium